JPS5859869A - Recording apparatus - Google Patents

Abstract

PURPOSE:To provide an attracting device in an ink-jet recording apparatus that enable an easy construction thereof, by a method wherein a recording sheet is attached onto a fixed attracting plate for recording. CONSTITUTION:When a recording sheet 2 is transmitted to a recording head 23 through a transmission paths 17 and 18, it is squeezed in the gap between a transmission guide 24 and an attracting plate 20 so that wrinkles, etc. of said recording sheet 2 will be removed. Further, since the maximum width of the opening 28 of the attracting plate 20 is smaller than the width of the recording sheet 2, there is no fear that the tip corner of the recording sheet 2 may be taken into the opening 28. Accordingly, the recording sheet 2 is sure to be attracted onto the attracting plate 20 so as to maintain a desired planeness and a certain distance between the recording head 23 and the recording sheet 2. The recording sheet that has finished recording is discharged, without fail, into a discharged sheet tray 3 by the blow sent by a blowing fan 21 out of a blast opening 27 of a transmission path 26A positioned immediately after transmission rollers 10A and 10B.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording apparatus, and particularly to a recording apparatus that performs recording by conveying recording paper by means of a conveying means while adsorbing it to a fixed plate.

When recording with a predetermined distance between the recording head and the recording paper, such as inkjet recording, if you do not keep the distance between the recording head and the recording paper constant, the TM quality will deteriorate. There is a habit of decreasing.

For example, JP-A-74-10/It! A sheet conveying device disclosed in the above publication has been proposed. Such a sheet conveyance device has a conveyance belt with numerous suction holes, and conveys the recording paper while sucking it from the back side of the belt using negative pressure generating means, and performs inkjet recording at the position of the belt.

However, such conventional sheet conveying devices have the following problems.

(1) It is difficult to make many holes in the belt.

(Score) Since there is no belt across the entire width of the recording paper, it is difficult to achieve a specified level of flatness in areas with and without a belt, and the cost increases in order to achieve flatness. I end up.

@) Poor assembly.

A device for applying K tension and a device for preventing belt damage are required, making the structure complicated.

SUMMARY OF THE INVENTION In order to eliminate these conventional drawbacks, an object of the present invention is to provide a recording apparatus that performs recording by transporting recording paper while attracting it to a fixed suction plate.

Hereinafter, Honpatsu Town will be explained in detail based on the drawings.

FIG. 1 shows an embodiment of the present invention, where l is a paper cassette in which recording paper is stored.

The paper cassette 1 has a bottom which also serves as a paper discharge tray 3, and furthermore, this prevents bongs and puri from entering the cassette. j is paper feed row 2 and roller! is rotated and pressed against the recording paper, thereby feeding the recording paper one by one. Timing rollers jA and 4B are rotated in synchronization with reading by a document reading section (not shown), thereby synchronizing the recording position on the recording paper and the reading position by the reading section.

7A-10m and 7B~/l) B is a conveyance roller,
//~/l is the transport path/7. It is a conveyance path member forming It and〃, and the recording paper 2 fed from the cassette)/ is conveyed via these rollers 7A to IOk, 7'B to /(7B and conveyance path n to /9). . Hectate the flatness〃, 2
? Maintain a constant distance between the paper and the recording paper. Also, J and B
is an elastic paper conveyance guide, and a gap smaller than the thickness of the recording paper is provided between it and the suction plate I forming the conveyance path.

Moreover, the bulge is an air blowing guide, which causes the air discharged from the fan I to rise along the guide bulge, and is blown as shown by the arrow BK from an opening 1 formed in the upper part of the guide into the conveyance path.

FIG. 2 is a perspective view of the recording apparatus of FIG. 1 viewed from the recording head side, and the present invention will be described in further detail with reference to FIG. Here, the recording head n is an inkjet head that performs red recording, and the head n is an inkjet head that performs black recording, and a signal from a reading section (not shown) is converted into a binary signal by a control circuit (not shown), and any one of the signals is converted as desired. Red and black recording can be performed by driving one head or both heads. In addition, this recording head u, JJk 0-77A% 70 people, 7B ~ 70B,
Conveyance guide 2#, 23. It is assumed that the fan I, the ventilation guide, etc. are supported by support means (not shown). That is, in the present invention, the V and the mounting plate X are fixed. Also,
Of the ventilation holes I drilled in the suction plate X, the feeding direction C of the recording paper
The distance between the hole drilled at one end perpendicular to the hole and the hole drilled at the other end is made smaller than the width of the recording paper roll, and when transporting the recording paper roll, The tip corner is hole I
This eliminates the risk of the vehicle entering the vehicle and causing flapping noise, speed fluctuations, or jamming. In addition, a plurality of conveyance path bhOH ports 1 formed at the top of the air guide are provided in the width direction of the recording paper sheet, and the width dimension thereof is made smaller than the width dimension of the recording paper sheet. Make sure that the tip does not enter this opening l. Figure 3 shows the details of the gap between the suction plate Keep it small.

The operation of the recording apparatus configured in this way will be explained with reference to Figures 1 and 2, but it is assumed that recording is performed only with the black head n.First, an original is read in an unillustrated original reading section. When this starts, paper feed roller j (FIG. 1) starts rotating, and only one recording paper λ in cassette I is fed and registered by tying rollers 4A and tB. At this time, the blower fan 2/ is also driven.Here, the tying rows 4A and tB are rotated in synchronization with the original reading, and when the leading edge of the recording paper reaches the recording head j, the driving of the recording head n is started. It is also possible to start the recording of the image, or to temporarily store the read information in the memory and then record the image.

Here, when the recording paper λ is conveyed to the recording head B via the conveyance path 17 and /l, the recording paper λ is squeezed in the gap between the conveyance guide and the suction plate, and the recording paper λ is curled etc. is removed. In addition, since the maximum width of the opening d of the recording paper 1g and the mounting plate Therefore, the recording head 2J
When recording <-, the recording paper is stacked on the suction plate JKm to maintain the desired flatness, and the gap between the recording hect 3 and the recording paper is kept constant, which improves the quality of the recorded image. Same as above can be expected.

The recorded recording paper λ on which recording with recording head B has finished is
Conveyance roller 2 A, digital 1 conveyance path L and conveyance roller 1
0m and 10B are ejected with salmon, but the conveyance row y loA
, Transport path after 1oBW, ? 4A has a ventilation opening l, and the air from the ventilation fan 1 is sent upward, so even if the recording paper is charged with static electricity, it will be absorbed by the transport path gAK of the ventilation guide. The recording paper is reliably ejected to the paper ejection tray J without any fear.

Also, since this paper ejection tray J uses the upper surface of the cassette)/upper Ml, there is no need to provide a separate paper ejection tray.
This leads to a reduction in the number of parts, which also makes it possible to reduce costs.

As described above, according to the present invention, since recording is performed by adsorbing the recording paper to the fixed suction plate, the configuration of the suction device is simplified and the cost can be reduced.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing an example of the configuration of the recording apparatus of the present invention, FIG. 2 is a perspective view thereof, and FIG. 3 is a detailed diagram illustrating a conveyance guide. l...Paper cassette, λ-recording paper, J-output tray, lid-upper lid, !・・・Paper feed roller, jA, 4B・-Tight glow-2, 7A~10k, 7B~10B...Transport roller, //~/g...Transport path W6 material % I~/ri・-
Conveyance path,〃...Adsorption plate, 1.-Blower fan,〃,23...Recording head, J, B.--Conveyance guide, S...Blower guide, J4A...Conveyance path, 1...・Opening, X... hole. Patent applicant Canon Co., Ltd.

Claims (1)

[Claims] a conveyance means for conveying the recording paper by transmitting a conveying force to the recording paper; a fixed suction plate having a plurality of openings for sucking the recording paper; 1. A recording apparatus comprising: a suction means for suctioning; and a recording means provided substantially opposite to the fixed foot V and latent plate to perform recording on the recording paper.